package kr.re.etri.autoflow.controllers;

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.enums.ParameterIn;
import io.swagger.v3.oas.annotations.media.Content;
import io.swagger.v3.oas.annotations.responses.ApiResponse;
import io.swagger.v3.oas.annotations.responses.ApiResponses;
import io.swagger.v3.oas.annotations.tags.Tag;
import kr.re.etri.autoflow.entity.MinioAttachmentEntity;
import kr.re.etri.autoflow.service.DatasetService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

@Slf4j
@Tag(name = "Dataset API", description = "외부 데이터셋 목록 조회 API (Python requests 코드 기반)")
@RestController
@RequestMapping("/api/datasets")
@RequiredArgsConstructor
public class ExternalDataSetController {

    private final DatasetService datasetService;

    @Operation(
            summary = "데이터셋 목록 조회",
            description = "외부 API(/export/dataset_list)를 호출하여 데이터셋 목록을 조회합니다."
    )
    @ApiResponses({
            @ApiResponse(responseCode = "200", description = "성공적으로 데이터셋을 조회했습니다."),
            @ApiResponse(responseCode = "400", description = "잘못된 요청입니다.", content = @Content),
            @ApiResponse(responseCode = "500", description = "서버 내부 오류", content = @Content)
    })
    @GetMapping("/list")
    public ResponseEntity<?> getDatasetList(
            @Parameter(description = "프로젝트 인덱스", example = "10")
            @RequestParam(required = false) Integer ds_prj_idx,
            @Parameter(description = "검색 키워드", example = "")
            @RequestParam(required = false) String search_keyword,
            @Parameter(description = "그룹 이름", example = "")
            @RequestParam(required = false) String grp_name
    ) {
        Map<String, Object> result = datasetService.getDatasetList(ds_prj_idx, search_keyword, grp_name);
        return ResponseEntity.ok(result);
    }

    @Operation(summary = "외부 데이터셋 다운로드 후 S3 저장", description = "Kubeflow 등 외부 API로부터 데이터셋을 다운로드하고 MinIO에 업로드합니다.")
    @PostMapping("/dataset/save")
    public ResponseEntity<Map<String, Object>> saveDatasetToS3(
            @RequestParam String datasetName,
            @RequestParam(required = false) String path,
            @RequestParam(required = true) Long refId,
            @RequestParam(defaultValue = "DATASET") String refType,
            @RequestParam(required = false) String title,
            @RequestParam(required = false) String description,
            @RequestParam(defaultValue = "1") Integer version,
            @RequestParam String regUserId,
            @RequestParam Long projectId
    ) {
        try {
            MinioAttachmentEntity saved = datasetService.downloadDataset(
                    datasetName, path, refId, refType, title, description, version, regUserId, projectId
            );

            Map<String, Object> response = new HashMap<>();
            response.put("attachment", saved);
            //response.put("minioUrl", minioAttachmentService.getFileUrl(saved.getStoragePath()));

            return ResponseEntity.ok(response);
        } catch (Exception e) {
            log.error("데이터셋 저장 실패", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
                    .body(Map.of("error", e.getMessage()));
        }
    }

}